feat(opencode-bridge): P3 session lifecycle events — compact and subagent stop#975
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…gent stop - Add experimental.session.compacting hook → fires preCompact to hook_runner, injects additionalContext into output.context - Add session.compacted event → fires postCompact after compaction completes - Track subagent sessions via session.created (parentID detection) - Add session.status handler → detects subagent idle → fires subagentStop with subagentId, subagentName, parentSessionId - Only fire sessionStart for main sessions (skip subagent created events) - 4 new source-level checks + 3 new hook runner integration tests Unlocks: CompactLifecycleRule, SubagentStopRule, AutoBriefingRule (postCompact) Rules heatmap: 2 rules ░░░░→████, partial unlock for 6+ others
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magicpro97
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Jun 9, 2026
…n, cwd, stdout, shell.env ## Summary Closes all remaining data gaps between the opencode bridge and hook_runner rules. Part of Phase 2 opencode bridge (continuing from PR #973, #974, #975). ### Changes 1. **exitCode/exit_code/stdout in toolResult** — unlocks SkillUsageRule, TokenTrackerRule, VerificationGateRule 2. **reason in sessionEnd** — idle events pass reason="idle" instead of "unknown" 3. **cwd in userPromptSubmitted** — UserPromptContextRule finds CONTEXT.md correctly 4. **shell.env hook** — injects COPILOT_AGENT_SESSION_ID into all subprocess environments ### Testing 39/39 bridge tests pass, 13/13 security tests pass. ### Phase 2 Complete Status - ~90% rules compatible with opencode - 12 bridge hooks covering all 10 hook_runner events - Remaining gaps (agentStop, voting) are CLI-only or semantically inappropriate
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Summary
Adds P3 session lifecycle events to the opencode bridge:
Changes
experimental.session.compactinghook — firespreCompactto hook_runner before compaction. Injects anyadditionalContextfrom rules intooutput.context.session.compactedevent — firespostCompactafter compaction completes.Subagent tracking — uses
session.createdevents to detect subagent sessions (those withparentID). Only firessessionStartfor main sessions.session.status(idle)handler — detects subagent idle → firessubagentStopwithsubagentId,subagentName,parentSessionId.Rules Unlocked
Partial unlock for 6+ additional rules that benefit from lifecycle signals.
Testing
Part of Phase 2 opencode bridge (continuing from PR #973, #974)